constify value_aggregate_elt

  While working on another patch I realized that value_aggregate_elt's
"name" parameter ought to be const.  This patch implements this.

2014-03-27  Tom Tromey  <tromey@redhat.com>

	* valops.c (value_aggregate_elt, value_struct_elt_for_reference)
	(value_namespace_elt, value_maybe_namespace_elt): Make "name"
	const.
	* value.h (value_aggregate_elt): Update.
---
 gdb/ChangeLog |  7 +++++++
 gdb/valops.c  | 14 +++++++-------
 gdb/value.h   |  2 +-
 3 files changed, 15 insertions(+), 8 deletions(-)
  

Hey Tom,

On Thu, Mar 27, 2014 at 02:11:40PM -0600, Tom Tromey wrote:
> While working on another patch I realized that value_aggregate_elt's
> "name" parameter ought to be const.  This patch implements this.
> 
> 2014-03-27  Tom Tromey  <tromey@redhat.com>
> 
> 	* valops.c (value_aggregate_elt, value_struct_elt_for_reference)
> 	(value_namespace_elt, value_maybe_namespace_elt): Make "name"
> 	const.
> 	* value.h (value_aggregate_elt): Update.

Any reason for delaying the push on these types of patches?
I think constifications are geneally a good thing and that
there is no real incentive into holding them before pushing...

Thanks!

> ---
>  gdb/ChangeLog |  7 +++++++
>  gdb/valops.c  | 14 +++++++-------
>  gdb/value.h   |  2 +-
>  3 files changed, 15 insertions(+), 8 deletions(-)
> 
> diff --git a/gdb/valops.c b/gdb/valops.c
> index cf195a3..a10dbd6 100644
> --- a/gdb/valops.c
> +++ b/gdb/valops.c
> @@ -83,15 +83,15 @@ oload_classification classify_oload_match (struct badness_vector *,
>  
>  static struct value *value_struct_elt_for_reference (struct type *,
>  						     int, struct type *,
> -						     char *,
> +						     const char *,
>  						     struct type *,
>  						     int, enum noside);
>  
>  static struct value *value_namespace_elt (const struct type *,
> -					  char *, int , enum noside);
> +					  const char *, int , enum noside);
>  
>  static struct value *value_maybe_namespace_elt (const struct type *,
> -						char *, int,
> +						const char *, int,
>  						enum noside);
>  
>  static CORE_ADDR allocate_space_in_inferior (int);
> @@ -3014,7 +3014,7 @@ destructor_name_p (const char *name, struct type *type)
>     the comment before value_struct_elt_for_reference.  */
>  
>  struct value *
> -value_aggregate_elt (struct type *curtype, char *name,
> +value_aggregate_elt (struct type *curtype, const char *name,
>  		     struct type *expect_type, int want_address,
>  		     enum noside noside)
>  {
> @@ -3095,7 +3095,7 @@ compare_parameters (struct type *t1, struct type *t2, int skip_artificial)
>  
>  static struct value *
>  value_struct_elt_for_reference (struct type *domain, int offset,
> -				struct type *curtype, char *name,
> +				struct type *curtype, const char *name,
>  				struct type *intype, 
>  				int want_address,
>  				enum noside noside)
> @@ -3324,7 +3324,7 @@ value_struct_elt_for_reference (struct type *domain, int offset,
>  
>  static struct value *
>  value_namespace_elt (const struct type *curtype,
> -		     char *name, int want_address,
> +		     const char *name, int want_address,
>  		     enum noside noside)
>  {
>    struct value *retval = value_maybe_namespace_elt (curtype, name,
> @@ -3346,7 +3346,7 @@ value_namespace_elt (const struct type *curtype,
>  
>  static struct value *
>  value_maybe_namespace_elt (const struct type *curtype,
> -			   char *name, int want_address,
> +			   const char *name, int want_address,
>  			   enum noside noside)
>  {
>    const char *namespace_name = TYPE_TAG_NAME (curtype);
> diff --git a/gdb/value.h b/gdb/value.h
> index f846669..9425a0e 100644
> --- a/gdb/value.h
> +++ b/gdb/value.h
> @@ -676,7 +676,7 @@ extern struct value *value_struct_elt_bitpos (struct value **argp,
>  					      const char *err);
>  
>  extern struct value *value_aggregate_elt (struct type *curtype,
> -					  char *name,
> +					  const char *name,
>  					  struct type *expect_type,
>  					  int want_address,
>  					  enum noside noside);
> -- 
> 1.8.5.3
  

>> * valops.c (value_aggregate_elt, value_struct_elt_for_reference)
>> (value_namespace_elt, value_maybe_namespace_elt): Make "name"
>> const.
>> * value.h (value_aggregate_elt): Update.

Joel> Any reason for delaying the push on these types of patches?

A while ago I was asked not to commit things without a waiting period.
So I wait at least a week unless I think it is truly obvious and
controversy-free; or if someone asks for the patch earlier.
My belief is that constification has not been without its battles, hence
the wait.

Tom
  

Tom> 2014-03-27  Tom Tromey  <tromey@redhat.com>
Tom> 	* valops.c (value_aggregate_elt, value_struct_elt_for_reference)
Tom> 	(value_namespace_elt, value_maybe_namespace_elt): Make "name"
Tom> 	const.
Tom> 	* value.h (value_aggregate_elt): Update.

I'm checking this in now.

Tom